23211222 has 16 divisors (see below), whose sum is σ = 49153392. Its totient is φ = 7281920.

The previous prime is 23211169. The next prime is 23211229. The reversal of 23211222 is 22211232.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23211229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113679 + ... + 113882.

It is an arithmetic number, because the mean of its divisors is an integer number (3072087).

Almost surely, 2^23211222 is an apocalyptic number.

23211222 is an abundant number, since it is smaller than the sum of its proper divisors (25942170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23211222 is a wasteful number, since it uses less digits than its factorization.

23211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227583.

The product of its digits is 96, while the sum is 15.

The square root of 23211222 is about 4817.8026111496. The cubic root of 23211222 is about 285.2546078096.

Adding to 23211222 its reverse (22211232), we get a palindrome (45422454).

The spelling of 23211222 in words is "twenty-three million, two hundred eleven thousand, two hundred twenty-two".